EP 0735232 B1 20001213 - Cutter bit for use in drilling operations
Title (en)
Cutter bit for use in drilling operations
Title (de)
Bohrmeissel für Bohrvorgänge
Title (fr)
Outil de coupe pour opérations de forage
Publication
Application
Priority
EP 95302012 A 19950327
Abstract (en)
[origin: EP0735232A1] Disclosed is a cutter bit (1) for use in drilling operations comprising a body (10) having a top portion (11) and a bottom portion (12), the bottom portion (12) being provided with cutting means for cutting a formation to which the cutting means is exposed. Within an outer circumference (13) of the bottom portion (12) of the body (10) there is provided an opening (14) to a first passage (15) through the body (10) to communicate a first zone (20) of a hole located below the bottom portion (12) of the body (10) with a second zone of the hole located above the bottom portion (12) of the body (10). <IMAGE>
IPC 1-7
IPC 8 full level
E21B 10/18 (2006.01)
CPC (source: EP)
E21B 10/18 (2013.01)
Designated contracting state (EPC)
BE DE DK FR GB IT NL SE
DOCDB simple family (publication)
EP 0735232 A1 19961002; EP 0735232 B1 20001213; DE 69519625 D1 20010118
DOCDB simple family (application)
EP 95302012 A 19950327; DE 69519625 T 19950327